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你好，28379D外设ADCSOCBO,配置XBAR后还是高电平，请教下问题？

jianhua li
Prodigy 10 points


EPwm1Regs.ETSEL.bit.SOCBEN = ET_CTR_ZERO; //Enable EPWM1SOCB pulse
EPwm1Regs.ETSEL.bit.SOCBSEL = ET_CTR_PRD; //Enable event time-base counter equal to period 
EPwm1Regs.ETPS.bit.SOCBPRD = ET_3RD;//ET_1ST; // Generate EPWM1SOCB on 1st event //

EALLOW;
SyncSocRegs.ADCSOCOUTSELECT.bit.PWM1SOCBEN=1;
//Outputbar 6
OutputXbarRegs.OUTPUT1MUX0TO15CFG.bit.MUX15 = 0x01;
OutputXbarRegs.OUTPUT1MUXENABLE.bit.MUX15 = 1;
OutputXbarRegs.OUTPUTLATCHENABLE.bit.OUTPUT1=1;
// OutputXbarRegs.OUTPUTINV.bit.OUTPUT1=1;
GpioCtrlRegs.GPAMUX1.bit.GPIO10 = 3;
GpioCtrlRegs.GPAGMUX1.bit.GPIO10 = 0;
GpioCtrlRegs.GPADIR.bit.GPIO10 = 1;
GpioCtrlRegs.GPAPUD.bit.GPIO10 = 0;
EDIS;

  • 0
    TI__Guru**** 252096 points

    您可以看一下TRM内的相关说明

    www.ti.com/.../spruhm8i.pdf

    Table 9-2. ePWM X-BAR Mux Configuration Table 的最下面关于ADCSOCAO和ADCSOCBO的说明

    (1) This signal is active high when routed through the X-BAR. It may need to be inverted by the respective TRIPOUTINV bit depending on
    the application.

    当通过X-BAR路由时，该信号为高电平有效。可能需要根据相应的TRIPOUTINV位反转应用程序。